On Fri, 2013-02-01 at 09:13 -0600, Seth Jennings wrote: > On 01/31/2013 07:39 PM, Simon Jeons wrote: > > Hi Seth, > > On Tue, 2013-01-29 at 15:40 -0600, Seth Jennings wrote: > <snip> > >> Performance, Kernel Building: > >> > >> Setup > >> ======== > >> Gentoo w/ kernel v3.7-rc7 > >> Quad-core i5-2500 @ 3.3GHz > >> 512MB DDR3 1600MHz (limited with mem=512m on boot) > >> Filesystem and swap on 80GB HDD (about 58MB/s with hdparm -t) > >> majflt are major page faults reported by the time command > >> pswpin/out is the delta of pswpin/out from /proc/vmstat before and after > >> then make -jN > >> > >> Summary > >> ======== > >> * Zswap reduces I/O and improves performance at all swap pressure levels. > >> > >> * Under heavy swaping at 24 threads, zswap reduced I/O by 76%, saving > >> over 1.5GB of I/O, and cut runtime in half. > > > > How to get your benchmark? > > It's just kernel building. So "make" :) > > I intentionally choose this workload so people wouldn't have to jump > through hoops to replicate the results.
Thanks for your clarify. zswap is belong to in-kernel compression, correct? then what's the difference between in-memory compression and in-kernel compression? > > Seth > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
